Haider is a longtime Mozilla Contributor.
He started as an Urdu Localizer. He then signed-up to become a Firefox Student Ambassador and later became Club Lead of "COMSATS Mozillians" Firefox Club.
Since the mid of 2014, he has been contributing on the Mozilla Support Forum and joined the "Army of Awesome" as well.
Earlier this year, he applied for the Tablet Contribution Program and has been filing bugs & contributing in the TCP.
He also joined the "Featured Add-ons Board" for Jan-June 2015.